Attr() en tekst-popup

.attri span 
{
	color: #1266f1;
	border-bottom: 1px dashed;
	position: relative;
	cursor: pointer;
}
.attri span::after 
{
	content: attr(data-tooltip);
	position: absolute;
	top: -1.25em;
	left: 50%;
	transform: translateX(-50%);
	color: #00b74a;
	font-style: italic;
	opacity: 0;
	transition: 0.2s;
}
.attri span:hover::after {opacity: 1;}

echo "<p class='attri'>Some <span data-tooltip='tooltip'>text</span> here</p>";